Improvement in planing-machines



J. ATKINS. Waning-Machines.

910,140,235, Patentedlune24,l873.

UNITED. STATES PATENT @rEroE- JAMES ATKINS, oE AUGUSTA, MAINE.

IMPROVEMENT IN PLANlNG-MACHINES.

Specification forming part of Letters Patent No.140,235, dated June 24,1873 application tiled June 15, 1872.

To all whom fit may concern:

Be it known that I, JAMES ATKINS, of Augusta, in the county of Kennebecand State of Maine, have invented a new Improvement in Flaming-Machines,of which the following is a specification:

My invention consists of a construction and arrangement of thepresser-bar, whereby it is made seltadjusting to the varying thicknessof the lumber, and so thatthe edge next the cut will be legit in suchnearness thereto while shifting to the said different thicknesses as toserve the purpose of a chip-breaker.

Figure 1 is a longitudinal sectional elevation of part of aplaningmachine with myimproved presser, and Fig. 2 is a transversesection taken on the line :r a' of Fig. 1.

Similar letters of reference indicate corresponding parts.

A is the planer-cylinder; B, the bed-plate; C,the feed-rollers5 l), theplank being planed 5 and E is the aforesaid presser, which has acurvature, in the face F fronting the cylinder A, of the radius ot thesaid cylinder, so that the lower edge G extends considerably under theplaner-cylinder P. In this example the said presser has two journals, H,on each end, each having a friction-wheel, I, on it, and said journalsand wheels project into the inclined slots K of a stand, L, on each sideof the niachine, the said slots being so inclined that, as j the presserrises and falls to the lumber of dierent thicknesses, the edge G will bemoved from and toward the cylinder` in about the saine inclination asthe slope ofthe cut in the board at M, as indicated by the dotted linew, thus keeping the said edge G so near the cut as to serve as achipfbreaker. rlhe lower journals of the presser are connected by rods NWith springs O below to cause the presser to bear with sufficientpressure.

Instead of having the journals on the presser with rollers working inthe fixed stands L, I may have plates in the form of these standsattached to the ends of the presser, with similar slots in the outsidesworking over rollers mounted on journals attached to fixed supports: theresult will be the saine.

Having thus described myinvention, I claim as new and desire to secureby Letters Patent- The combination of the obliquely -slotted guidestands or plates L with the presser-bar E, constructed as described.

JAMES ATKINS.

Witnesses ELIsHA ATKINS, T. M. DILLINGHAM.

